package com.qf.interceptor;

import com.qf.entity.User;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * 登录拦截器
 *
 * @author 阿亘
 * @date 2023/07/14
 */
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        // 对登录信息进行验证
        HttpSession session = httpServletRequest.getSession();
        User user = (User) session.getAttribute("login");
        if (user != null){
            return true;
        }
        httpServletRequest.getRequestDispatcher("/WEB-INF/jsp/login.jsp").forward(httpServletRequest, httpServletResponse);
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}
